Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 41 for “"interface model"”.
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Decoupling methods for the time-dependent Navier-Stokes-Darcy interface model
… of time-dependent Navier-Stokes-Darcy (NS-Darcy) interface problems. This research on decoupling methods is motivated to efficiently solve the complex Stokes-Darcy or NS-Darcy type models, which arise from many interesting real world problems involved with or even dominated by the coupled porous …
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A diffuse interface model of transport limited electrochemistry in two-phase fluid systems with application to steelmaking
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2002.
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Core-Level Photoemission Studies of the Structure of Semiconductor Surfaces and Interfaces
… the chemical depth profile of the Si(111)/SiO2 interface, the photoemission intensity of the Si 2p core level from the Si(111)/SiO2 system has been measured as a function of photoelectron emission angle. The SiO2 layer is amorphous, and photoelectron diffraction techniques cannot be employed. A …
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Towards a financial literacy model as a coordinating interface between financial information and decision makers
… study is to investigate how a financial literacy interface model could contribute towards the comprehensibility of financial information to decision makers in organisations. The way individuals and institutions use the concept of financial literacy suggests that different people attach different …
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Multiscale Peridynamics Analysis of Nanocomposites and Energetic Materials Using Nonlocal and Local Interface Models
Interface modeling is a critical aspect in any multi-material system modeling. Even a small change in the interface model may lead to significant changes in material behavior of the microscale, and these changes may transfer up to higher scales influencing the strain and stress fields, and damaging …
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Analysis of Delamination in Thick Section Composite Materials Using Homogenized FE Modeling
For thick section composites, the proposed interface model is incorporated into an existing homogenized constitutive model. The interface is treated as one of the layers constituting the repeating sublaminate, which is the basic building block of the thick section laminate. This homogenized model …
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New technique for the development of open CNC cell controller based on ISO 14649 and ISO 6983
… International Standards Organization (ISO) data interface model (ISO 6983) limitations was encountered. A new ISO standard known as Standard for The Exchange of Product Data (STEP) or ISO 10303 was introduced to overcome the issues of current data interface model in Computer Aided Design …
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UIML: A Device-Independent User Interface Markup Language
… device-independent (or multi-channel) user interfaces promoting the separation of the interface from the application logic. It introduces an interface model (Meta-Interface Model, or MIM) for separating the user interface from the application logic and the presentation device. MIM divides …
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Phase field model for precipitates in crystals
… to simulate multiphase system is the sharp interface model. Sharp interface model requires tracking the interface between phases, which make the simulation much difficult and complicate. Phase-field model offers an alternative approach for predicting mesoscale morphological and …
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Extraction methods for multidirectional driving point accelerance and transfer point accelerance matrices
… testing are studied. The study reveals that the interface DOF deficiency error is the most catastrophic and sophisticated error. None of interfacial DOF's can be neglected. The bias error can be corrected easily. The noise error appears to be most severe in the low frequency range. The exciter …
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Testing and constitutive modelling of saturated interfaces in dynamic soil-structure interaction.
… experiments are conducted on remolded clay-steel interfaces under undrained conditions and a constant normal stress. Also, a constitutive model for the stress-strain-pore-pressure behavior of cohesive soil interfaces under dynamic loading is developed using the new unified disturbed state concept …
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Adaptive Spline-based Finite Element Method with Application to Phase-field Models of Biomembranes
<p>Interfaces play a dominant role in governing the response of many biological systems and they pose many challenges to traditional finite element. For sharp-interface model, traditional finite element methods necessitate the finite element mesh to align with surfaces of discontinuities. …
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Information retrieval as card playing: a formal model for optimizing interactive retrieval interface
We propose a novel formal model for optimizing interactive information retrieval interfaces. To model interactive retrieval in a general way, we frame the task of an interactive retrieval system as to choose a sequence of interface cards to present to the user. At each interaction lap, the system's …
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Thermodynamically consistent modelling and computational methods for multiphase flows
… We begin by introducing an extension of the Model H to study the two-phase flows with thermocapilliary effects, where we assume that the coefficient of the surface tension is temperature dependent, and the classical energy equation is coupled with the Model H. We then investigate numerically …
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Evolution of a non-cohesive granular bed subject to a succession of erosive turbidity currents
… to evaluate the applicability of a proposed interface model that prescribes a relationship between the bed shear stress and the local bed elevation and local bed slope. This study considered only the relationship between the local bed elevation and the shear stress by using non-cohesive …
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Computational modeling of crack initiation in cross-role piercing
… to the creation of tile small hole has been modeled. The Gurson-Tvergaard-Needlemnan model of porous plasticity is used to simulate the Mannesmann effect. The appearance of a crack at the center of the cylindrical bar is demonstrated and the stress profiles, plastic equivalent strain profiles …
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Dewetting of thin solid films
… various mathematical topics such as phase field modeling, the derivation of corresponding sharp interface limits, existence of solutions, numerical simulations and linear stability analysis of the dewetting front. We start with the formulation of a two-dimensional anisotropic phase field model …
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A Computational Tool for Seismic Collapse Assessment of Masonry Structures
… geometry, using as a starting point a geometric model of the structure in Rhino (a 3D CAD software). These equations of motion are then exported for solution to MATLAB. As a number of collapse mechanisms take place above ground level, a methodology to account for ground motion amplification …
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Long-term management and discounting of groundwater resources with a case study of KukioÌ HawaiiÌ
… at late times. In Part II a hydrologic-economic model is constructed for a dual coastal and high-level aquifer system at Kuki'o, Hawai'i. The high-level aquifer is modeled as a leaky bucket, while the coastal aquifer is modeled using a sharp-interface formulation of the basal lens. Salinization …
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